CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues from contracts with customers	[1]	$ 791.0	$ 564.5	$ 1,369.1	$ 2,185.5
Other revenues		12.7	12.9	23.9	22.5
Operating revenues		803.7	577.4	1,393.0	2,208.0
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE		393.3	200.0	649.0	1,546.8
OPERATING EXPENSES
Other operation and maintenance		118.1	119.2	233.1	228.5
Depreciation and amortization		111.6	102.9	219.0	201.6
Taxes other than income		24.1	25.8	52.2	53.0
Operating expenses		253.8	247.9	504.3	483.1
OPERATING INCOME		156.6	129.5	239.7	178.1
OTHER INCOME (EXPENSE)
Equity Securities, FV-NI, Gain (Loss)		(39.6)	0.0	242.7	0.0
Equity in earnings of unconsolidated affiliates		0.0	33.5	0.0	86.7
Allowance for equity funds used during construction		0.9	1.6	2.2	2.9
Other net periodic benefit expense		(2.7)	(1.3)	(12.1)	(2.7)
Other income		21.9	6.3	44.5	9.3
Other expense		(8.4)	(6.7)	(13.6)	(8.7)
Net other income		(27.9)	33.4	263.7	87.5
INTEREST EXPENSE
Interest on long-term debt		39.5	37.8	78.9	76.2
Allowance for borrowed funds used during construction		(0.9)	(0.7)	(2.1)	(1.5)
Interest on short-term debt and other interest charges		3.8	2.8	5.7	4.6
Interest expense		42.4	39.9	82.5	79.3
INCOME BEFORE TAXES		86.3	123.0	420.9	186.3
INCOME TAX EXPENSE		13.2	10.1	68.3	20.7
NET INCOME		$ 73.1	$ 112.9	$ 352.6	$ 165.6
BASIC AVERAGE COMMON SHARES OUTSTANDING		200.2	200.2	200.2	200.1
DILUTED AVERAGE COMMON SHARES OUTSTANDING		200.7	200.4	200.6	200.2
BASIC EARNINGS PER AVERAGE COMMON SHARE		$ 0.37	$ 0.56	$ 1.76	$ 0.83
DILUTED EARNINGS PER AVERAGE COMMON SHARE		$ 0.36	$ 0.56	$ 1.76	$ 0.83
Other Comprehensive Income (Loss), Net of Tax		$ 0.9	$ 0.7	$ 8.7	$ 4.2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		74.0	113.6	361.3	169.8
OG&E [Member]
Revenues from contracts with customers		791.0	564.5	1,369.1	2,185.5
Other revenues		12.7	12.9	23.9	22.5
Operating revenues		803.7	577.4	1,393.0	2,208.0
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE				649.0	1,546.8
OPERATING EXPENSES
Other operation and maintenance				233.8	228.6
Depreciation and amortization				219.0	201.6
Taxes other than income				50.1	50.7
Operating expenses		253.2	246.2	502.9	480.9
OPERATING INCOME		157.2	131.2	241.1	180.3
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction		0.9	1.6	2.2	2.9
Other net periodic benefit expense		(1.8)	(1.2)	(3.2)	(2.1)
Other income		1.0	1.1	2.2	2.8
Other expense		(0.4)	(0.3)	(0.8)	(0.7)
Net other income		(0.3)	1.2	0.4	2.9
INTEREST EXPENSE
Interest on long-term debt		38.6	37.4	77.1	75.8
Allowance for borrowed funds used during construction		(0.9)	(0.7)	(2.1)	(1.5)
Interest on short-term debt and other interest charges		2.1	1.2	3.0	2.0
Interest expense		39.8	37.9	78.0	76.3
INCOME BEFORE TAXES		117.1	94.5	163.5	106.9
INCOME TAX EXPENSE		16.4		23.8	10.6
NET INCOME		100.7	85.1	139.7	96.3
Other Comprehensive Income (Loss), Net of Tax		0.0	0.0	0.0	0.0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 100.7	$ 85.1	$ 139.7	$ 96.3

[1] In February 2021, Winter Storm Uri resulted in record winter peak demand for electricity and extremely high natural gas and purchased power prices in OG&E's service territory. Operating revenues for the six months ended June 30, 2021 significantly increased due to increased fuel, purchased power and direct transmission expenses, which are generally recoverable from customers, as a result of Winter Storm Uri. For further discussion, see Note 14 and "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operation."